Filter.



:r. KUHAJDA. f

FILTER. APPLICATION FILED 11017.12 1910.

Patented May 2, 1911.

WITNESSES ATTORNE I "1: NORRIS PETIR: c0 wusuuvcron. n. c.

, claims and JOSEPH KUHAJDA, OF NEW YORK, N. Y.

FILTER. 5 '1 i Specification of Letters Patent.

Patented May 2, 1911.

Application filed. November 12, 1910. Serial No. 592,013.

To all whom it may concern:

Be it known that I, Josnrrr KUHAJDA, a subject of the King of Hungary,and a resident of the city of New York, in the county of New York andState of New York, have invented certain new and useful Improvements inFilters, of which the following is a specification.

The present invention relates to improvements in filters, and has forits object to provide a simple, cheap and effective device to beattached to a faucet or other source of liquid supply.

Another object of the invention is to provide the filter with afiltering medium which can be easily cleansed without detaching thefilter from the faucet.

A further object of the invention is to provide a novel and simplefiltering medium.

A still further object of the invention is to provide a filter withmeans, whereby the liquid may be discharged from the faucet withoutpassing through the filtering me dium.

With these and other objects in view, which will more fully appear asthe nature of the invention is better understood, the same consists inthe construction, combination and arrangement of parts hereinafter fullydescribed, pointed out in the appended illustrated in the accompanyingdrawings, it being understood that many changes may be made in the sizeand proportion of the several parts and minor details of constructionwithout departing from the spirit or sacrificing any of the advantagesof the invention.

One of the many possible embodiments of the invention is illustrated inthe accompanying drawings, in which Figure 1 is a vertical sectionalview of a filter embodying the invention; Fig. 2 is a plan view of thetwo disk strainers of the device; and Figs. 3 and 4 are front elevationsof the filtering medium shown in different ositions.

Referring now more particularly to Figs. 1 to 4, inclusive, the numeral10 designates the base of the improved filter, and the numeral 11 thecover of the same. Seated in a suitable seat formed in the upper face ofthe base 10 is a receptacle 12, preferably made of glass, and upon whichrests the cover 11. This cover is provided with an inlet 13 leading tothe interior of the receptacle 12, while the base has an outlet 11leading from the receptacle, The base, receptacle and the cover are heldtogether by means of a perforated tubular member 15, having outer screwthreads upon its lower end 16 and upon its upper end'17, which mesh withscrew threads formed upon the base and cover, respectively. Within thistubular member 15 is arranged the filtering medium, which consists of ahelical spring 18, the outer diameter of which corresponds exactly tothe inner diameter of the tubular member 15. This spring is attached inany suitable manner to the upper end of the tubular member 15, and isprovided along its entire length with teeth or prongs 19 in such amanner that the prongs of one coil contact normally with the lower edgeof the next coil. It will be easily seen that, if these teeth or prongsare small enough, minute holes or perforations, as it were, will beformed between the adjoining coils, freeing thus the liquid passingthrough the same from the substances mechanically mixed with it. Thelower end 20 of the coil is secured to a hollow semi-globular valve 21,which is seated in a spherical extension 22 of the tubular member 15,and is attached to a stem 23, passing through said spherical extension22 and through the base of the filter. To this stem is attached anoperating handle 24:. The tubular member 15 is provided below thespherical extension 22 with a plurality of slots or holes 25. Upon thebase 10 is seated a disk 27, which has a plurality of slots 28. Abovethis disk 27 and contacting therewith is located a shiftable disk 29,also provided with a plurality of slots, indicated at 30, which areadapted to register with the slots 28. Into the slots 30 project aplurality of prongs 31 for a purpose hereinafter to be described. To thedisk 29 is secured a handle 32, which extends through an opening 33 inthe base 10, whereby the disk 29 may be oscillated relative to the disk27, which latter is stationary relative to the base of the filter; theglass receptacle 12 resting upon'the face of the disk 27 holding thesame in a stationary position. The slots 30 may be radially disposed ormay be V- shaped, as clearly shown in Fig. 2 of the drawings, or of anyother configuration. Within the helical spring 18 is arranged a stem 34,which is, preferably, rotatably mounted upon a spider 35, attached to ormade integral with the tubular member 15 above the spherical extension22. A worm or substances secreted by the the same and the tactsthroughout its length wlth the inner which will be explainedhereinafter.

The operation of this device is as follows: Assuming that the filter isarranged upon a faucet and it is desired to draw a quantity of filteredwater, and if the parts of the filter are in the positions shown inFigs. 1 and 2 of the drawings, the valve of the faucet is simply opened,whereby the water will enter the helical spring filter l8 and flowthrough perforations of the tube 15 into the receptacle 12. From thereceptacle 12 the water flows through the slots 30 and 28 of the disks29 7, respectively, toward and through the slots or holes 25 in thetubular member 15 out through the 14 of the filter. Should it be deslredto obtain a quantity of unfiltered water, is given an angular turn of90, permitting thereby the water to flow filtered water, the filteringspring 18 is expanded when the semi-globular valve 21 is turned 90 sincethe said spring is connected this shaft and consaid inlet to at itslower end to the semi-globular valve The water entering the tube 15 isforced by the worm or helix 36 into contact with the filtering spring 18and operates thus to wash and cleanse the same. This expanded positionof the filtering spring is indicated in Fig. 4 of the drawings. Sincethe semiglobular valve obstructs to some extent the spherical extension22 of th ers will be carried by the action of the running water to theoutlet of the filter.

lat I claim is:

1. In a filter, the combination with a resaid outlet and being providedwith a spherical extension and with p forations above and below saidspherical extension, extension, upper end of said tubular member and tosaid valve, said helical spring being pro vided with prongs along itslength for keeping the coils of said helical spring apart and formingthereby a plurality of minute openings, and means for shifting saidvalve around its axis, for the purpose specified.

2. In a filter, the combination with a receptacle having a coverprovided with an inlet opening and a bottom with an outlet opening, atubular member leading from said inlet to said outlet and being providedwith a spherical extension and with perforations above and below saidspherical extension, a valve arranged in said spherical extension, ahelical spring attached to the upper end of said tubular member and tosaid valve, said helical spring being provided with prongs along itslength for keeping the coils of said helical spring apart and formingthereby a plurality of minute openings, means for shifting said valvearound its axis, and a worm arranged within said helical spring. In astrainer, the combination with a stationary disk having a plurality ofslots, of a shittable disk also provided with a plurality of slots whichare adapted to register with the slots of said stationary disk, and apluralit of prongs arranged in the slots of one of said disks, for thepurpose specified.

4. A strainer comprising a wire bent in the form of a helical spring, aplurality of prongs formed throughout the length of apart and formingthereby a plurality of openings between said coils.

Signed at New York, in the county of New York and State of New York,this 4th day of November, A. D. 1910.

JOSEPH KUHAJDA.

ceptacle having a cover provided with an in- Witnesses:

let opening and a bottom with an outlet SIGMUND Hnnzoe,

opening, a tubular member leading from S. BIRNBAUM.

Copies of this patent may be obtained for five cents each, by

addressing the Commissioner of Patents,

Washington, G.

